Bosch djetronic, ljetronic, lhjetronic, lhmotronic, kjetronic and kejetronic fuel injection systems. Licensing some of boschs ljetronic concepts and technologies, lucas, hitachi. Check the system pressure and flow with the lb2912f. A thorough understanding of the various components is required before working on kjetronic fuel systems. U tom slucaju na rezultat merenja ne utice gustina vazduha koja zavisi od temperature i pritiska atmosferskog. While port injection systems such as ke and ljetronic employ a separate injector for each cylinder, monojetronic features a single, centrallylocated, solenoidcon. This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the ke jetronic. I dont know why there are a separate ignition control box,and a ecu box. The final car to use kjetronic was the porsche turbo 3. Gasoline fuel injection system mono jetronic pdf995 bitbin.
Then, the command unit processes this information received and calculate the appropriate fuel injection time, through an electric signal. Lele2lu a 010902021 9705 1 operation lele2lu jetronic foreword the multitester pluspro software cassette is the component that gives the diagnostic equipment its unique test characteristics. Mar 27, 2006 read above, i explained that lh jetronic has 2 seperate controllers and motronic controlls them togeather. This is a simplified and more modern variant of ljetronic. Bosch l jetronic l jetronic rx7 brought to you by the team at created date. The most common cause of lh jetronic ecu failure is the hybrid control circuit.
Digital data processing and microprocessors make it possible to translate extensive operating. Earlier volvo engine management systems had separate control units for fuel and spark. The lejetronic command unit receives various input signals, from the various sensors that send precise information about the instant engine operation conditions. Model year 1989 and newer 928s have a spark monitoring system, consult the wiring schematics and workshop manuals for specifics. Before troubleshooting, testing or adjusting the k jetronic fuel injection system, the ignition system and the mechanical system of the engine compression, valve timing, etc. Feb 12, 2019 bosch digifant engine management system jetronic motronic.
Read above, i explained that lh jetronic has 2 seperate controllers and motronic controlls them togeather. The engine control wire harness for both lhjetronic 3. Home ferrari 400 ferrari 400 parts shop bosch k jetronic webshop. With the electronics disconnected, this system will operate as a kjetronic system. As stated in the video, you have access to all measures of the original software. Perfect power wiring diagram volvo ecu volvo wiring diagrams model sv40 2. Engine will not run at idle airfuel mixture is too rich this can damage catalytic converters no fuel pump operation, butthefuel pump operates when its relay is. Bmw engines all about the m50m52m54bosch motronic basic, motronic 1. Bosch ljetronic l jetronic rx7 brought to you by the team at created date. The primary difference between this motronic system and the previous generation of volvo lhjetronic engine management systems is the fact that ignition timing is controlled directly by the motronic pcm. You can open them as pdf file or save them on your computer. This manual describes the troubleshooting and repair of vehicles with the.
It was reading like someone would hold the info and pdf files hostage, freed for a fee, some around 6 gigs of volvo reference content including many years of green manual sets. Jetronic is a trade name of a fuel injection technology for automotive petrol engines, developed. This video shows how to engineer modelbased functions for the lhjetronic 2. By club member john hall, who worked for volvo usa for many years. Ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3jetronic. Bad ecu common symptoms of a failing lh injection module. Get bosch mono jetronic manual pdf epub and save both time and money by visit our website, available in formats pdf, kindle, epub, itunes and mobi also. This chart is a summary of bosch lhjetronic components for the saab 900 and 9000 cars, from 1984 through 1994. Note the orientation of the protruding alignment notch. While port injection systems such as ke and l jetronic employ a separate injector for each cylinder, mono jetronic features a single, centrallylocated, solenoidcon. Vw l jetronic fuel injection workshop manual created date. Robert bosch ljetronic efi system using mostly common workshop tools.
With the electronics disconnected, this system will operate as a k jetronic system. Motronic, featuring digital processing for numerous engine functions. A thorough understanding of the various components is required before working on k jetronic fuel systems. Onsomeljetronic systems, the air temperature sen sor is visible in the air flow meter inlet. While new carburated engines were used in the european markets, vw adapted the ljetronic for the type 4 in the us due to more stringent emissions and fuel consumption regulations. Bosch le jetronic bmw copyright equiptech boschlejetronic thereismuchconfusionabouttheactualtypeofinjectionsystemfittedtomanybmwmotorcarsduringtheperiod1980to. Engine will not run at idle airfuel mixture is too rich this can damage catalytic converters no fuel pump operation, butthefuel pump operates when its relay is jumpered between pins 30 and 872. As stated in the video, you have access to all measures of the. Now im not sure because i havent tried it but i would imagine if one were to install the lh2. There are two separate temperature sensors housed in the one sensor body in lh fuel injected 928s, one sensor is for the lh and the other for the spark module. Monojetronic fuelinjection system system overview monojetronic is an electronically controlled, lowpressure, singlepoint injection spi system for 4cylinder engines. Start the engine and bring up to normal running temperature.
This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the kejetronic. Jetronic, lhjetronic, and motronic as an integrated engine management system. Product information automotive gasoline systems diagnostics and. Attention aux poids du fichier merci a tout ceux qui mont. However the components of other cars using ljetronic will. I dont know why there are a separate ignition control box,and a. Bosch l jetronic fuel injection troubleshooting, maintenance.
The most common cause of lhjetronic ecu failure is the hybrid control circuit. Before troubleshooting, testing or adjusting the kjetronic fuel injection system, the ignition system and the mechanical system of the engine compression, valve timing, etc. Vw ljetronic fuel injection workshop manual author. Bosch handbook k d l lh jetronic fuel injection emissions. This is a simplified and more modern variant of l jetronic.
B 230 f gasoline engine with fuel injection and cataly tic. Aug 16, 2019 ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic. Air mass meter amm with aluminum body and adjustable mixture. It looks like the ezk boxes uses a 25 pin connector,same row and pin spacing. There is alot of information on high performance lh jetronic systems but the problem with the system as far as i know is its inability to measure large amounts of airflow without moddifications since it uses a total flow sensor as far as. Mono jetronic fuelinjection system system overview mono jetronic is an electronically controlled, lowpressure, singlepoint injection spi system for 4cylinder engines. The le jetronic command unit receives various input signals, from the various sensors that send precise information about the instant engine operation conditions. Bosch digifant engine management system jetronic motronic. I have found that most of the problems were in connections, either being dirty or loose. All data required to make the test system operate are stored on the software cassette. How can i tell which version of bosch lh fuel injection is on.
Jun 22, 2011 this adapter allows you to calibrate the bosch lh jetronic. Megasquirt support forum msextra lhjetronic 35 pin. If the inlet air temperature sensor fails its resistance tests, you cant service just the sensor. There seems to be a lot of dissagreement on what the version number is on this early system. A site that lists the ecu connector pinouts for the lh jetronic 2. Vw l jetronic fuel injection workshop manual author. Ljetronic system fuel injectors n open when energized by ecu not continuous as k jetronic. Jetronic controls fuel supply while the electronic ignition system provides optimal ignition control. The lhjetronic was mostly used by scandinavian car manufacturers, and by sports and luxury cars produced in small quantities, such as porsche originally, this system was called jetronic, but the name djetronic was later created as a retronym to distinguish it from newer versions. Volvo repair manuals free download automotive handbook.
The primary purpose of the fuelinjection system is to. Some later post1995 versions contain hardware support for first generation diagnostics according to iso 9141 a. This adapter allows you to calibrate the bosch lhjetronic. A computer controls the injection and ignition systems with reference to shared optimization criteria. This page was last edited on 30 novemberat sequential fuel injection and knock control. Vous trouverez sur cette page des documents bosch et constructeurs a telecharger sous format pdf. I am currently developing a circuit board that accepts the 35pin connector used on jetronic boxes. With the lh relay jumpered between pins 30 and 87, there should be 12 v at lh connector pin 18. Vw ljetronic fuel injection workshop manual created date. You can both modify parameterscurvesmaps and read out all internal values. Jun 08, 2012 this video shows how to engineer modelbased functions for the lh jetronic 2. Onsomel jetronic systems, the air temperature sen sor is visible in the air flow meter inlet. Interject k jetronic servicing and cleaning procedure 1. This soft file bosch mono jetronic manual pdf epub is ready to read anytime you want.
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